In telecommunications the automatic call-back is a computer telephone function which allows the user by the engaged addressee’s line or in the other case of the subscriber’s inaccessibility indicating the system to save the number of the called subscriber and make the call when the line will be available or when the called number is not engaged.
E-Resource 21 started its business operation in 1st August 2000 with its principal business engaged mainly in the Civil Engineering Construction and related business including Employment Agency for the local and oversea construction business. E-Resource 2
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